MDU RESOURCES GROUP INC 8-K

What Happened

• On May 7, 2026, MDU Resources Group, Inc. announced its first-quarter 2026 financial results via a news release furnished as Exhibit 99 to the Form 8-K and held a webcast to discuss the results and provide a business update. The filing notes an investor presentation related to the Q1 2026 results is available on the company’s Investor Relations website. The report was signed by CFO Jason L. Vollmer and includes the interactive XBRL cover page file.

Key Details

• Date of announcement: May 7, 2026.
• News release furnished as Exhibit 99 to the Form 8-K.
• Investor presentation for Q1 2026 posted at investor.mdu.com (website materials not incorporated by reference).
• Company hosted a webcast on May 7, 2026 to discuss quarterly results and business update; presentation materials available online.

Why It Matters

• This 8-K informs investors that MDU has released its quarterly earnings materials and is providing a management update via webcast — key sources for company revenue, earnings and outlook information. Retail investors should review the Exhibit 99 news release and the investor presentation for the actual financial figures, revenue trends, and any guidance or commentary provided by management.